939  
CDUS41 KLWX 190527  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1227 AM EST SUN JAN 19 2025  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 18 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 45 4:31 PM 70 1990 42 3 35  
MINIMUM 32 8:43 PM -1 1994 25 7 11  
AVERAGE 39 34 5 23  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 1.18 1980 0.09 -0.06 0.00  
MONTH TO DATE 0.85 1.70 -0.85 3.96  
SINCE DEC 1 4.19 5.00 -0.81 9.71  
SINCE JAN 1 0.85 1.70 -0.85 3.96  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.2 1984 0.2 -0.2 0.0  
MONTH TO DATE 9.1 3.4 5.7 4.4  
SINCE DEC 1 9.2 6.2 3.0 4.9  
SINCE JUL 1 9.2 6.5 2.7 4.9  
SNOW DEPTH T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 31 -5 42  
MONTH TO DATE 617 554 63 527  
SINCE DEC 1 1446 1399 47 1202  
SINCE JUL 1 2114 2299 -185 1973  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 6.0  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 8:00 PM  
LOWEST 64 12:00 AM  
AVERAGE 76  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 65 1972  
MINIMUM TEMPERATURE (F) 25 -6 1994  
 
SUNRISE AND SUNSET  
JANUARY 19 2025.......SUNRISE 7:25 AM EST SUNSET 5:17 PM EST  
JANUARY 20 2025.......SUNRISE 7:25 AM EST SUNSET 5:18 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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